Sondra R Lomita , CA January 02, 2015 Appliance: Whirlpool Gas Range SF367PEYQ5 Whirlpool Range Sf367peyq5: Selector knob / thermostate knob worn out. How to replace Knob, Selector (Designer White). Reasonably priced and fast service thanks to you! I was able to get two news knobs and get rid of the old, worn out ones. I could not even read them anymore. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes